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perf_counter: Update userspace callchain sampling uses 

Update the tools to reflect the new callchain sampling format.

LKML-Reference: <new-submission>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
wifi-calibration
Peter Zijlstra 2009-06-18 22:20:45 +02:00 committed by Ingo Molnar
parent f9188e023c
commit 2a0a50fe9d
1 changed files with 37 additions and 45 deletions
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82
tools/perf/builtin-report.c
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@ -59,6 +59,11 @@ struct ip_event {
unsigned char __more_data[];
};
struct ip_callchain {
__u64 nr;
__u64 ips[0];
};
struct mmap_event {
struct perf_event_header header;
__u32 pid, tid;
@ -833,15 +838,12 @@ got_dso:
return dso->find_symbol(dso, ip);
}
static struct symbol *call__match(struct symbol *sym)
static int call__match(struct symbol *sym)
{
if (!sym)
return NULL;
if (sym->name && !regexec(&parent_regex, sym->name, 0, NULL, 0))
return sym;
return 1;
return NULL;
return 0;
}
/*
@ -850,7 +852,7 @@ static struct symbol *call__match(struct symbol *sym)
static int
hist_entry__add(struct thread *thread, struct map *map, struct dso *dso,
struct symbol *sym, __u64 ip, struct perf_callchain_entry *chain,
struct symbol *sym, __u64 ip, struct ip_callchain *chain,
char level, __u64 count)
{
struct rb_node **p = &hist.rb_node;
@ -869,31 +871,35 @@ hist_entry__add(struct thread *thread, struct map *map, struct dso *dso,
int cmp;
if (sort__has_parent && chain) {
int i, nr = chain->hv;
struct symbol *sym;
struct dso *dso;
__u64 ip;
__u64 context = PERF_CONTEXT_MAX;
int i;
for (i = 0; i < chain->nr; i++) {
__u64 ip = chain->ips[i];
struct dso *dso = NULL;
struct symbol *sym;
if (ip >= PERF_CONTEXT_MAX) {
context = ip;
continue;
}
switch (context) {
case PERF_CONTEXT_KERNEL:
dso = kernel_dso;
break;
default:
break;
}
for (i = 0; i < chain->kernel; i++) {
ip = chain->ip[nr + i];
dso = kernel_dso;
sym = resolve_symbol(thread, NULL, &dso, &ip);
entry.parent = call__match(sym);
if (entry.parent)
goto got_parent;
}
nr += i;
for (i = 0; i < chain->user; i++) {
ip = chain->ip[nr + i];
sym = resolve_symbol(thread, NULL, NULL, &ip);
entry.parent = call__match(sym);
if (entry.parent)
goto got_parent;
if (sym && call__match(sym)) {
entry.parent = sym;
break;
}
}
nr += i;
}
got_parent:
while (*p != NULL) {
parent = *p;
@ -1095,21 +1101,10 @@ static unsigned long total = 0,
total_unknown = 0,
total_lost = 0;
static int validate_chain(struct perf_callchain_entry *chain, event_t *event)
static int validate_chain(struct ip_callchain *chain, event_t *event)
{
unsigned int chain_size;
if (chain->nr > MAX_STACK_DEPTH)
return -1;
if (chain->hv > MAX_STACK_DEPTH)
return -1;
if (chain->kernel > MAX_STACK_DEPTH)
return -1;
if (chain->user > MAX_STACK_DEPTH)
return -1;
if (chain->hv + chain->kernel + chain->user != chain->nr)
return -1;
chain_size = event->header.size;
chain_size -= (unsigned long)&event->ip.__more_data - (unsigned long)event;
@ -1130,7 +1125,7 @@ process_overflow_event(event_t *event, unsigned long offset, unsigned long head)
__u64 period = 1;
struct map *map = NULL;
void *more_data = event->ip.__more_data;
struct perf_callchain_entry *chain = NULL;
struct ip_callchain *chain = NULL;
if (event->header.type & PERF_SAMPLE_PERIOD) {
period = *(__u64 *)more_data;
@ -1150,10 +1145,7 @@ process_overflow_event(event_t *event, unsigned long offset, unsigned long head)
chain = (void *)more_data;
dprintf("... chain: u:%d, k:%d, nr:%d\n",
chain->user,
chain->kernel,
chain->nr);
dprintf("... chain: nr:%Lu\n", chain->nr);
if (validate_chain(chain, event) < 0) {
eprintf("call-chain problem with event, skipping it.\n");
@ -1162,7 +1154,7 @@ process_overflow_event(event_t *event, unsigned long offset, unsigned long head)
if (dump_trace) {
for (i = 0; i < chain->nr; i++)
dprintf("..... %2d: %016Lx\n", i, chain->ip[i]);
dprintf("..... %2d: %016Lx\n", i, chain->ips[i]);
}
}